Mirror-suspending device.



No. 656,928. Patented Augf28, |900.

-M. A. BIVER & A. E. HNARD.

MIRROR SUSPENDING DEVICE.

(Application filed May 22, 1900.)

(No Model.) 6 Sheets-Sheet l.

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No. 656,928. Patented Aug. 287 IQOIL M. A. BlvEn & A. E. HNAHD.

MIRROR SUSPENDING DEVICE.

(Application led May 22, 1900.) (No Modal.) 6 Sheets-Sheet 2.

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No. 656,928. Patented Aug. 23, |900.

` M. A. 'BWI-:R & A. E. HNARD.

MIRROR SUSPENDING DEVICE.

A. l'eation filed may 22, 1900.) (no modell pp s sheets-sheet 3.

WITNESSES www@ jf M www@ AJM/m4 ATTO RN EYS No. 656,928. Patented Aug.2a, |900. M. A. BWEH & A. E. HNARD.

MIRROR SUSPENDING DEVICE.

(Application led May 22, 1900.) (No Model.) 6 Sheets-Sheet 4.

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No. 656,928. Patented Aug. 2a, 4|960.

` M. A. BlvEn @L A.VE. HNARD.

MIRROR SUSPENDING DEVICE.

(Application led May 22, 1900.)

(No Model.) 4 G'ShIaets-She 5..

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No. 656,928. i Patented Aug. 28, |900. M. A. RIVER a. A. E. MENARD.MIRROR SUSPENDINGDEVICE.

` (Applimion med May 22, 1900.) (No Model.) 6 ShaetsaSheet 6,

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. MATi-nAs ALFRED RIVER AND ALFRED EUGENE RENARD, oF PARIS,

FRANCE.

MIRROR-.SUSPENDING Dray/ice.`

SPECIFICATION forming part of Letters Patent No. 656,928, dated August28, 1900.

' Application filed May 22, 1900. Serial No. 17,614.. (No model.)

To all .whom t may concern:

Be it known that we, MATHIAs ALFRED BI- VER, engineer, residing at 9 RueSainte Cecile, and ALFRED EUGENE HENARD, architect, residing at i58 RueSaint Lazare, Paris, France, have invented new Arrangements forSuspending and Adjusting the Mirrors Forming the Walls of MultipleReflecting-Chambers, of which the following is a specification.

The present invention consists in new arrangements forsuspending and adjusting the mirrors forming the walls of a multiple reflecting-chamberwhen the size of these walls does not permit of making them of one sheetof glass and also in obtaining certain special effects by means of wallsthus constructed.

These chambers may be constructed with any number of walls but we willdescribe, by way of illustration, our invention in connection withchambers formed with walls making with one another angles of ninetydegrees, sixty degrees, or one hundred and twenty degrecs. These are theonly ones which permit of the illusion of a space repeated indefinitelyin every direction with the same interior decoration. We will take, forexample, the ar rangements adopted in a hexagonal chamber, in which eachof the walls being too large to be covered by a single mirror will becovered by, say, a dozen mirrors in juxtaposition.

In the accompanying drawings, Figure l is a vertical section showing thegeneral arrangement of the chamber. Fig. 2 is a corresponding horizontalsection. Fig. 3 is a back View of a frame for receiving the mirror. Fig.4. is a transverse section, on an enlarged scale, following the line ofX Y of Fig. 3, showing in detail the mode of fitting the mirror to theframe. Fig. 5 is a front view of a mirrorfaced wall. Fig. 6 is avertical section followingthe line A B in Fig. 5. Fig. 7 is a horizontalsection following the line C D in Fig. 5. Fig. 8 is a front view, on anenlarged scale,showing the disposition of the suspending and adjustingapparatus for the mirrorframes. Fig. 9 is a corresponding side view.

The chamber represented in Fig. lis, by supposition, decorated by sixarcades l, supporting an elliptically-vaulted roof 2, which roof isvisible by reflection in the arcades provided with mirrors for at leasttwo repetitions. Each arcade rests apparently upon the two half-columns3, placed directly against the reiiecting-walls; but it is in realitysupported by a metal skeleton framework, distant about lone foot fromthe reiecting-wall, in such manner as to permit of the raising and adjusting of the panels, Fig. l. These halfcolumns 3, made of bars oftransparent material, can be illuminated by means of electric lamps. Theentrance to the chamber is effected by doors 4., placed in the bases ofthe columns at the angles of the chamber.

The construction of the mirrorframes to be suspended from the walls isgiven in detail in Figs. 3 and 4.. The frame, which is rectangular, isconstructed of bars d, of angleiron, strengthened at its angles bybrackets b, a bar 'c across the middle, and four bars d, placed in formof a lozenge, the bars c and d serving to prevent the whole fromaltering its form. The frame is supported at its upper corners byhorizontal adjustable bolts c, carried by arms adjustable in bracketsupon the main wall, and retained in position upon the arms by collarsThese bolts form the suspending-axis of the frame and for that purposeenter pairs of lugs bolted to the back of the frame. These bolts arethreaded and tapped into the lugs to provide for the lateral adjustmentof the frame. The lower corners of the frame carry two hooks ff,which'allow of the vertical adjustment of the frame by means of movablerods, as will be explained later. Theframe-bars are made perfectly trueand are arranged so as to make by the putting together of their surfacesa reiiectingsurface as fiat as possible. The mirror is 4held verticallyupon the frame by an. incasing of iron bent or drawn to a special shapeh, Fig. 4, and making a bordering all around the edge of the mirror.This bordering serves to hold the mirror to the frame, but does notoverlap the mirror edge by more than threeeghths of an inch. The mirroritself is bedded upon a plastic substance or felt .and its edges arecovered with the same material. In reality the mirror bears only on thelower bordering. Itis merely held by the lateral ones and can expandfreely by sliding in the IOO borders without leaving its true plane. Thevisible position of the bordering and the edges of the mirror arepainted a dull black, so as to make them as invisible as possible. Eachpanel thus constructed is hung to two adjusting apparatus, which arethemselves bolted -to and embedded in the wall of the chamber.

In order to avoid all vibration and expansion in the apparatus forsuspending the mirrors and to give more rigidity to the wall whichcarries them, we make the latter a wall'of masonryt', Figs..5, 6, and 7,stayed by a series of vertical buttressesj, making projections from thewall of about four feet. These buttresses are connected one to anotherby a series of working platforms placed at such levels that one can fromthem easily effect the adjustment of the mirrors by hand. Small manholesl in all the buttresses open to each platform and allow' one to go theround of the chamber at all levels which correspond to the horizontalrows of mirrors. An outer passage m and accessory stairs n, Fig. 2,allow one to mount easily to all parts of the chamber. The distance fromcenter to center of each buttress j is identical with the width of eachpanel. Each buttress can therefore carry one above the other upon itstwo sides the suspension apparatus for two adjoining panels, there beingas many pairs of apparatus as there are superposed mirrors. Thebuttresseslikewise carry lateral arms p, which serve to receive theregulating-rods from the lower portion of the mirrors provided tomaintain the verticality. Each frame d therefore is carried at its uppercorners by the bolts e upon two suspending and adjusting apparatus ixedupon adjoining buttresses upon the sides which face one another, and atthe two lower corners the frame is held by means of the hooks f by twoadjusting apparatus fixed in like manner upon these buttresses.

The suspending and adjusting apparatus for each of the upper corners ofthe frame consists of a triangular cheek q, projecting beyond thevertical face of the buttress, the same being sunk and cemented intoabloek of hard stone and bolted to the cheek on the otherside of thesame buttress by bolts o, passing through or in front of the buttressj.By this means we secure an absolute rigidity in the system. The upperangle of each cheek is bored to receive a horizontal bolt r, likewisepassing in front of the buttress. At each end of this bolt and.perpendicular to its axis is pivoted a triangular suspension-bracket s,with its upper edge formed to receive a sliding arm t, with a stronghook at its forward end. At the hinder end of this arm is a threadedportion ce, furnished with a nut which provides for the properadjustment of the rod longitudinally. The lower angle of the bracket sabuts on another adj Listing-rod u, threaded and tapped into a lug fw onthe cheek q, which allows of the stopping at any point the rockingmovement of the bracket s. The hook of the suspending-arm t catches ontothe bolt e at the upper corner of the frame between the two collars andby reason of the lateral movement of the bolts in the lugs on the framethe side movement. of the panel is obtained. Finally a key-pin y,provided for below the hook on the bar t and only put into the lug afterplacing the frame on the hook, prevents the frame from becomingunhooked, while leaving the latter free to take up averticalposition.The lower adjusting apparatus consists of a roda, provided at one of itsextremities with aneye, into which the hookfon the frame can freelytake, and connected at its other end to the buttress by means of athreaded rod tapped into the lateral arm p, cemented in the buttress j.The verticality of the frame can be regulated by means of nuts, the roda being enabled to move on the hook f, according to the lateral positionof the latter. By means of this arrangement the frame may be made totake up three variable positions in directions perpendicular to oneanother, viz: irst, vertically by means of the suspending-bracket andits rocking movement; second, horizontally in a direction perpendicularto the plane of the mirror by means of the sliding arm t and its adjusting-screw, and, third, horizon-` tally in a direction parallel to theplane of the glass by the movementof the suspensionbolt e of the frame.One can thus regulate the plane of the reiiecting-wall in the mostperfect way possible, and one can modify within a sufficiently-largerange the position of each one of the panels composing a reflecting-wallof the chamber, so as to make all the reflecting-planes coincide and toplace them side by side regularly and with the least possible amount ofplay, whether vertically or horizontally.

The arrangement described may vary in its details, the essentialcondition which forms the object of the present application being toadjust in three directions perpendicular to one another, the points ofsuspension of each mirror going to form the reflecting-wall.

We claim- 1. A polygonal chamber with reflectingwalls, each one composedof any number of mirrors, each in a special frame, in combination withmeans for suspending and attachin g each frame independently of theothers at its corners, and devices for adjusting each frame in threedirections perpendicular to one another to change the verticality andplane of the reflectingwalls, all substantially as described.

2. A polygonal chamber having reflectingwalls consisting of a series offramed mirrors with suspending devices for each mirror, consisting ofpairs of brackets movable about a horizontal axis parallel to the planeof the mirror, said brackets carrying sliding arms provided with hooks,and adjustable in a direction perpendicular to the mirror, and a IOO IIO

ing at its upper corners bolts e threaded to be adjustable in adirection parallel to the plane of the mirror, and at its lower cornerswith hooks f, substantially as described.

In testimony whereof we have signedour names to this specification inthe presence of I 5 two subscribing witnesses.

MATHIAs ALFRED BIVEE. ALFRED EUGENE HENAED.

Witnesses:

CHARLES DONY, EDWARD P. MACLEAN.

